package com.heima.admin.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.admin.mapper.AdUserMapper;
import com.heima.admin.service.AdUserService;
import com.heima.common.exception.CustException;
import com.heima.model.admin.dtos.AdUserDTO;
import com.heima.model.admin.pojos.AdUser;
import com.heima.model.admin.vos.AdUserVO;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.utils.common.AppJwtUtil;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.DigestUtils;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

@Service
public class AdUserServiceImpl extends ServiceImpl<AdUserMapper, AdUser>implements AdUserService {

    @Transactional
    @Override
    public ResponseResult login(AdUserDTO dto) {
        //1. 校验参数
        String name = dto.getName();
        String password = dto.getPassword();
        if (StringUtils.isBlank(name) || StringUtils.isBlank(password)) {
            CustException.cust(AppHttpCodeEnum.PARAM_INVALID, "用户名和密码不能为空");
        }
        //2. 根据用户名 查询对应的用户
        AdUser user = this.getOne(Wrappers.<AdUser>lambdaQuery().eq(AdUser::getName, name));
        if (user == null) {
            CustException.cust(AppHttpCodeEnum.DATA_NOT_EXIST, "用户不存在");
        }
        //3. 对比 输入的密码 和 数据库中的密码是否一致
        //   MD5(输入密码+salt)
        String intPwd = DigestUtils.md5DigestAsHex((password + user.getSalt()).getBytes());
        if (!intPwd.equals(user.getPassword())) {
            CustException.cust(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);
        }

        //4. 判断用户状态是否为9(正常)
        if (user.getStatus().intValue() != 9) {
            CustException.cust(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);
        }
        //5. 重新设置loginTime时间
        user.setLoginTime(new Date());
        this.updateById(user);
        //6. 颁发token
        String token = AppJwtUtil.getToken(Long.valueOf(user.getId()));

        AdUserVO adUserVO = new AdUserVO();
        BeanUtils.copyProperties(user, adUserVO);

        Map result = new HashMap<>();
        result.put("token", token);
        result.put("user", adUserVO);
        //返回结果
        return ResponseResult.okResult(result);
    }

}
